I think that is what the Forte should of came with..... all the older and still some current tuner cars have larger 2.0 to 2.5 boosted engine's. But I think ever since ford started their ecoboost line (smaller boosted engines) everyone followed them. They are starting to put bigger engines now at least but before the Explorer just had the 2.0 eco boost. Now they have the 3.5. Also chevy followed, they had the cobalt now they have the cruze with what a 1.4 or something? And the srt4 with the 2.4l and now the dart has a 1.4 with 184hp I think?
At the end of the day, I am happy with the Forte, I do wish it had more power but it was a pretty cheap car and I bought it to have a nice reliable fun daily driver that I can do some little mods overtime. Personally I wouldn't do a swap but if it could be done I'm sure some will do it.
Another thing that we could look at too, how close are the motors to being the same? Similar head? Can turbos be swapped, assuming the optima has a bigger turbo.